From f353fd886465f3fd6b96ed34804003f8cc3572fb Mon Sep 17 00:00:00 2001
From: Stefan Eilemann <Stefan.Eilemann@epfl.ch>
Date: Tue, 10 Feb 2015 13:54:22 +0100
Subject: [PATCH] Fix pointer underrun when allocating large vectors

Change-Id: Ia69fc3098468eb64420215dc1068342ccbbb1ede
---
 include/flatbuffers/flatbuffers.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/flatbuffers/flatbuffers.h b/include/flatbuffers/flatbuffers.h
index a20b5bfb2..d6b6e9a71 100644
--- a/include/flatbuffers/flatbuffers.h
+++ b/include/flatbuffers/flatbuffers.h
@@ -367,7 +367,7 @@ class vector_downward {
   }
 
   uint8_t *make_space(size_t len) {
-    if (buf_ > cur_ - len) {
+    if (len > static_cast<size_t>(cur_ - buf_)) {
       auto old_size = size();
       reserved_ += std::max(len, growth_policy(reserved_));
       auto new_buf = allocator_.allocate(reserved_);